ETSI ETS 300 646-4
- Integrated Services Digital Network (ISDN); Signalling System No.7; Digital cellular telecommunications system (Phase 2); Application of ISDN User Part (ISUP) version 2 for the ISDN-Public Land Mobile Network (PLMN) signalling interface; Part 4: Abstract
- standard by European Telecommunications Standards Institute, 03/01/1998
- Publisher: ETSI
$66.00$131.00
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